Cookie & UA Manager is a Chrome extension designed for developers, testers, and advanced users seeking to manage their web identity efficiently. This free tool allows users to export cookies and the current User Agent into a JSON file, facilitating session portability across different browser environments. With its precise restoration feature, it ensures that domain scopes are respected and prevents issues like duplicate cookies and 'leading dot' problems. The extension also provides global User Agent modification, enhancing compatibility with various web scripts.

The extension emphasizes user privacy by keeping all data local, only processing information when saving or loading files. It automatically cleans identical cookies before restoration, ensuring a conflict-free experience. Users can easily save their cookie configurations or restore them by simply uploading the JSON file, making it a streamlined solution for managing web sessions.